gcleaner | fa0e1c01a2b64430edd79c4597f696abb613a1070c74ef8dc8278a257a0dccd7

Analysis

max time kernel
90s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
25/01/2023, 04:02

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General

Target
file.exe
Size 1.7MB
Sample230125-elsm8aeg94
SHA256 fa0e1c01a2b64430edd79c4597f696abb613a1070c74ef8dc8278a257a0dccd7
MD5 60f78254760b195a92e9f720a3fbc0ed
SHA1 657bc4abcd91bb74db74a4489536f18ceb37f4c6
SHA512 fd8cf8306c98184a4d231d19cec7d652b5801ae799572cc83d7073d85184dffdeab64c3e3ed2b676bee19082eba527f81076b18b392e2b928076ddc47b21cbb7
SSDEEP 24576:Z3Bbsheqcb2kWfG7EbDCtdBMW8KcoGRgZut08zAMy4BZEkt4BEMCiAePnrtEqXMZ:ZUcKkW+NtdLqPRg47A47LMvjMLCgv2MR
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

45.12.253.56
45.12.253.72
45.12.253.98
45.12.253.75

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner

Executes dropped EXE 3 IoCs

pid	Process
1428	file.tmp
4748	finalrecovery.exe
8	31UqhCS.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	finalrecovery.exe

Loads dropped DLL 1 IoCs

pid	Process
1428	file.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\FgasoftFR\FinalRecovery\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\FgasoftFR\FinalRecovery\unins000.dat	file.tmp
File created	C:\Program Files (x86)\FgasoftFR\FinalRecovery\is-4P9AE.tmp	file.tmp
File created	C:\Program Files (x86)\FgasoftFR\FinalRecovery\is-OATDJ.tmp	file.tmp
File created	C:\Program Files (x86)\FgasoftFR\FinalRecovery\data\is-SUHBL.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\FgasoftFR\FinalRecovery\finalrecovery.exe	file.tmp
File created	C:\Program Files (x86)\FgasoftFR\FinalRecovery\is-PFPAD.tmp	file.tmp
File created	C:\Program Files (x86)\FgasoftFR\FinalRecovery\is-SGC0O.tmp	file.tmp
File created	C:\Program Files (x86)\FgasoftFR\FinalRecovery\is-6TRBL.tmp	file.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
3568	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4748	finalrecovery.exe
4748	finalrecovery.exe
4748	finalrecovery.exe
4748	finalrecovery.exe
4748	finalrecovery.exe
4748	finalrecovery.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3568	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4460 wrote to memory of 1428	4460	file.exe	79
PID 4460 wrote to memory of 1428	4460	file.exe	79
PID 4460 wrote to memory of 1428	4460	file.exe	79
PID 1428 wrote to memory of 4748	1428	file.tmp	80
PID 1428 wrote to memory of 4748	1428	file.tmp	80
PID 1428 wrote to memory of 4748	1428	file.tmp	80
PID 4748 wrote to memory of 8	4748	finalrecovery.exe	81
PID 4748 wrote to memory of 8	4748	finalrecovery.exe	81
PID 4748 wrote to memory of 8	4748	finalrecovery.exe	81
PID 4748 wrote to memory of 4720	4748	finalrecovery.exe	89
PID 4748 wrote to memory of 4720	4748	finalrecovery.exe	89
PID 4748 wrote to memory of 4720	4748	finalrecovery.exe	89
PID 4720 wrote to memory of 3568	4720	cmd.exe	91
PID 4720 wrote to memory of 3568	4720	cmd.exe	91
PID 4720 wrote to memory of 3568	4720	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4460
- C:\Users\Admin\AppData\Local\Temp\is-JT4PP.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-JT4PP.tmp\file.tmp" /SL5="$A004E,1563839,54272,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1428
- - C:\Program Files (x86)\FgasoftFR\FinalRecovery\finalrecovery.exe
    "C:\Program Files (x86)\FgasoftFR\FinalRecovery\finalrecovery.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4748
  - - C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\31UqhCS.exe
      4⤵
      Executes dropped EXE
      PID:8
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "finalrecovery.exe" /f & erase "C:\Program Files (x86)\FgasoftFR\FinalRecovery\finalrecovery.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4720
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "finalrecovery.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3568

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

finalrecovery.exe

Path C:\Program Files (x86)\FgasoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 baef099bafe7ff4f546165eb7c4f27c8b6af30538aed22436f950833ddab0f7d
MD5 c7fa685e29f25c55554cb2e9a913a2d6
SHA1 523fae32771bab9b8a087e8f0246ac34d37fc6da
SHA512 38d3029e9b5a24ceb5fbb3153914a67e3b3e2bc16d8d15e1656acf8eedcd1e42e9d8cc35a549cfafa9150396724dd032c66d051904c1bdf12b0aa1691ff74cca
SSDEEP 24576:AtGFBo2mKO6bacm/GAiHymdE5Sf79sENM+hZQBcS4gkgznM:NPtsGAY9dEYJFPFgVM
MD5 SHA1 SHA512 SSDEEP

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finalrecovery.exe

Path C:\Program Files (x86)\FgasoftFR\FinalRecovery\finalrecovery.exe
Size 1.3MB
SHA256 baef099bafe7ff4f546165eb7c4f27c8b6af30538aed22436f950833ddab0f7d
MD5 c7fa685e29f25c55554cb2e9a913a2d6
SHA1 523fae32771bab9b8a087e8f0246ac34d37fc6da
SHA512 38d3029e9b5a24ceb5fbb3153914a67e3b3e2bc16d8d15e1656acf8eedcd1e42e9d8cc35a549cfafa9150396724dd032c66d051904c1bdf12b0aa1691ff74cca
SSDEEP 24576:AtGFBo2mKO6bacm/GAiHymdE5Sf79sENM+hZQBcS4gkgznM:NPtsGAY9dEYJFPFgVM
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-CF1G0.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-JT4PP.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-JT4PP.tmp\file.tmp
Size 696KB
SHA256 229fbcb11ee7d1f082b6411610e95f726eec4e6737e6b6392719df4f0fe3fa1d
MD5 d76329b30db65f61d55b20f36b56da26
SHA1 5e4c77b723ae8f05b3ae6afeee735a4355f00663
SHA512 a291aed0897315e88b6378b1db10ada05bda8c1eccaf73de23f409fe61860ebd1dbb422063e00996584d3b4b100122931d5bbab54a88951706d75efcc660f70d
SSDEEP 12288:9QtLeYXPEv4arPEn37TzH7A6p3xxu9yz/eERMY1VLJrNufs9RZM2GHOQyD362kS0:+tCUA4arPEn37TzH7A6nw9yzeESUFWH/
MD5 SHA1 SHA512 SSDEEP

Submit Download

31UqhCS.exe

Path C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\31UqhCS.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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31UqhCS.exe

Path C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\31UqhCS.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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memory/4460-132-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/4460-151-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/4460-156-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/4460-134-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/4748-142-0x0000000000400000-0x0000000001344000-memory.dmp

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memory/4748-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4748-152-0x0000000000400000-0x0000000001344000-memory.dmp

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memory/4748-144-0x0000000000400000-0x0000000001344000-memory.dmp

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memory/4748-143-0x0000000000400000-0x0000000001344000-memory.dmp

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memory/4748-155-0x0000000000400000-0x0000000001344000-memory.dmp

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